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Digital View ALC-7680 LCD controller board with large heatsink

ALC-7680 LCD Controller Board

8K Input & Panel Support

  • LCD panels up to 7680x4320
  • Panel connectivity: V-by-One or eDP
  • Video inputs: HDMI, Displayport
  • RS-232 for controls & functions
  • Programmable hot-keys
  • Picture-in-Picture (PiP), Picture-by-Picture (4K sources)
  • Customization: Contact us

  • Part number: 4179300xx-3
  • Availability: Built to order; please ask for the current lead time

ALC-7680 LCD Controller Board

The ALC-7680 LCD controller board is an interface board converting video signals such as HDMI, Displayport, DVI to the signals required by compatible LCD panels such as from AUO, BOE, Innolux, LG Display, Samsung, Sharp, and others. The ALC-7680 is supported by panel connection cables and other accessories , together with system development documentation, 3D drawings, and engineering support for customization.

The ALC-7680 is the first of our 8K resolution controller boards. Its feature set ensures suitability for many commercial display applications, such as digital signage and corporate AV. A full summary of Digital View LCD controllers can be seen here : LCD Controller Summary.


ALC-7680 block diagram. Control reaches the board from OSD buttons, an infrared remote and RS-232, with DDC 1.3, CTA-861 revision 3 and the DisplayID 1.2 extension for 8K with display stream compression over the video inputs. Video arrives on three connectors: HDMI 2.1 at P3, DisplayPort 2.0 at P5 and USB-C Alt Mode at P7, each accepting up to 7680 by 4320 at 60 hertz. Digital View video processing selects the input, scales the image, applies sRGB and xvYCC color processing, and composes picture-in-picture or picture-by-picture across two windows with 4K sources, with an on-screen display menu. The panel output is 32-lane V-by-One at 3 gigabits per second on connectors J7_OUT1 and J7_OUT2, or eDP over four HBR3 links with AUX on J7_OUT3, for panels from 1920 by 1080 up to 7680 by 4320. Audio is a digital line out header and a jack with volume control. Power feeds regulation, which supplies a jumper-selected panel voltage of 3.3, 5, 10, 12 or 18 volts and drives the backlight with 8-bit PWM and a DPMS enable pin. Telemetry for temperature, brightness and GPIO is read back over RS-232; the fan speed is set by PWM with no readback.
ALC-7680 block diagram (click to zoom)

An illustrative example of a Digital View connection diagram, of the kind supplied for a confirmed panel and controller pairing through the Controller Solution Generator at csg.digitalview.com. This example pairs the ALC-7680 with an 8K panel. It shows how the panel, its backlight and its power connect to the board, which cable part number to use for each run and how long it should be, where the power supply and OSD switch mount attach, and which connector carries each video input. A diagram of this kind is produced for the specific panel you intend to drive.

Controller Solution Generator (CSG)
an online database to look up LCD panels and matching controllers

Specifications: ALC-7680

LCD Panel Connectivity
  • Panel connection: 32-lane V-by-One @3Gbps, or eDP (HBR3)
  • Panel resolutions: Up to 7680x4320. The range of panel resolutions includes all standard panel resolutions as well as custom LCD panel resolutions. For example custom cut panel resolutions can also be supported. The minimum panel resolution supported is 1920x1080.
  • Colors: Up to 12-bit per color. 12-bit is confirmed up to 4096 x 2160. At 7680 x 4320 the confirmed depths are 8-bit and 10-bit. DisplayPort, USB-C and HDMI all reach native 8K 60Hz in RGB 4:4:4; YCbCr 4:2:2 is also available on DisplayPort and USB-C, and YCbCr 4:2:0 on HDMI
  • Panel power: 3.3V, 5V, 10V, 12V, 18V
  • Backlight inverter/driver support: PWM (8 bit), DPMS Enable pin (5V or 3.3V)

  • Recent panel connection: LG LM315QU1-SSA2
Input: HDMI 2.1 (x1)
  • 60Hz up to 7680x4320
  • 480p, 576p, 720p, 1080p, 4k/30
Input: Displayport 2.0 
(x1)
  • 60Hz up to 7680x4320
  • 480p, 576p, 720p, 1080p, 4k/30
Input: USB-C (x1)
  • Video: USB-C Alt Mode 
  • 60Hz up to 7680x4320
  • 480p, 576p, 720p, 1080p, 4k/30
Function Interface
  • On Screen Display (OSD) menu
  • Functions can be called by buttons or IR remote control.
  • Functions are also accessible via a Serial port (RS-232)

Mechanical & Environmental

  • Board dimensions: 203 x 154 mm
  • Maximum height: 
  • Mounting holes: 
  • Recommended clearance: 
  • Operating temperature: 0°C to +60°C
  • Storage temperature: 
  • 2D and 3D drawings: see Downloads & Resources on this page

Digital View ALC-7680 STEP file render
ALC-7680, STEP 3D, see downloads

ALC-7680 connector map, top side, 203 by 154 millimeters. Along the top edge are CN19 for panel power, the panel outputs J7_OUT2 and J7_OUT1 for 32-lane V-by-One, and J7_OUT3 for eDP AUX. Along the bottom edge, from the left: PHONE_OUT audio jack, P3 HDMI 2.1, P5 DisplayPort 2.0 and P7 USB-C. Down the left edge: FAN, then CN11, CN6 for the ambient light sensor and CN3, which is reserved, then CP1 and CN8, which sits beside the RS-232 line driver. Down the right edge: CNB2, CNB1, CNA1 and CNC1, then PP4 for external panel power and PP2 and PP5 for the DC input.
ALC-7680 connectors (click to zoom)
Functions
  • Basic: Brightness, Contrast, Color Temperature, Image positioning, Saturation, Hue, Sharpness
  • Additional: System Information, Scaling to fill screen and fill to aspect ratio, Picture-in-Picture and Picture-by-Picture (left/right, two windows, 4K sources; single window at 8K), Programmable hot keys, Image scaling Up/Down scaling to fit input to panel resolution & aspect ratio
  • Telemetry: Temperature, brightness and GPIO are read over RS-232; fan speed is set by PWM and is not read back
Audio
  • Digital audio line out (from header) and audio jack with OSD volume control
Other
  • Status indicators on board: Dual color or LED
  • Plug & Play: DDC 1.3 compatible and Display ID 2.0
Reliability
  • Warranty 3 years

Customization

(options*)

  • Custom firmware and panel timing 
  • Video input timing support
  • DICOM grayscale curve support
  • Custom EDID
  • Splash screen logo, ie start-up screen
  • Custom hotkeys, menus, commands
  • Build options to omit connectors
  • Full PCBA relayout, conformal coatings & other hardware changes
  • Software utilities or Apps for RS-232 control

Downloads: ALC-7680

Brochure (PDF)
Manual (PDF)
Revision Note (PDF)
2D Drawing (PDF)
2D Drawing (DWG)
3D Drawing (SLDPRT, STEP)

Application Notes

Guide to using RS-232 commands

LCD Panel Connection Diagrams

Controller Solution Generator

Software Web Page

Link: Software web page
Includes applications for remote control, settings updates and more.

Statements & Declarations

Statement of volatility
Compliance & declarations page

Related Models


Frequently asked questions

Common questions about the ALC-7680.

The panel output is 32-lane V-by-One at 3 Gbps, or eDP over four HBR3-compliant links, for panels from 1920 x 1080 up to 7680 x 4320. Color is 8-bit and 10-bit at 7680 x 4320, and up to 12-bit at 4096 x 2160 and below. Custom and custom-cut panel resolutions are supported as well as the standard ones. Panel power can be set to 3.3, 5, 10, 12 or 18 V, and the backlight is driven by 8-bit PWM with a DPMS enable pin. To check a specific panel, look it up on the Controller Solution Generator at csg.digitalview.com.

Yes, with a 4K source. The board takes three inputs - HDMI 2.1, DisplayPort 2.0 and USB-C in Alt Mode - each accepting up to 7680 x 4320 at 60 Hz. With a 4K source it will place one source inside another as picture-in-picture, or show two side by side as picture-by-picture. With an 8K source the controller runs a single window.

Three ways, and they can be combined. An on-screen menu driven by buttons, an infrared remote, and RS-232. RS-232 also reads telemetry back from the board: temperature, brightness and GPIO, so an installed display can be monitored as well as commanded. Fan speed is set by PWM and is not read back. Hot-keys are programmable.

Accessories: ALC-7680

OSD Buttons

Cables

Backlight

Audio Board

IR Remote

120Hz Panels

Composite Video

3G-SDI